Carbureter for explosive-engines.



No. 705,995. Patented July 29, I902. G. A. GRAVES.

CARBURETER FOB EXPLDSIVE ENGINES (Application filed Oct. 15, 1901.)

(No Model.)

awmzwtol UNITED STATES:

PATENT OFFICE.

A GEORGE A. GRAVES, OF JOPLIN, MISSOURI, ASSIGNOR OF TWO-THIRDS TO THOMAS W. CUNNINGHAM AND ALFRED REYNOLDS, OF J OPLIN,

MISSOURI.

CARBURETER FOR EXPLOSIVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 705,995, dated July 29, 1902. Application filed OOtOber 16, 1901- Serial No. 78,689. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE A. GRAVES, a citizen of the United States,residing at Joplin, in the county of Jasper and State of Missouri, have invented new and useful Improvements in Oarbureters, of which the following is a specification. I v

My invention relates to carburetors or mixing-valves for vapor or gas engines; and the object of the same is to construct a device of this character which will be simple in construction and efficient in operation. This object is accomplished by a simple and novel construction described in this specification and claimed, and illustrated in the accompanying drawings, forming a part thereof, in which Figure 1 is a vertical section of my device and a fragment of the cylinder. Fig. 2 is a detail of the gasolene cup. Fig. 3 is a detail of thevaporizer.

Like numerals of reference designate like parts in the difierent views of the draw ings.

The numeral 1 designates a hollow casing which forms a chamber for a needle-valve 2,

mounted therein and having a threaded stem.

3 and conical point 3. Connected to the cas= ing 1 is a gasolene-supply pipe 4, an overflow= pipe 5, a vent-pipe 6, and a connection 7, hav= ing a valve-seat 8in its inner end. The sup= ply-pipe 4 is connected to some source of gasolene. (Not shown.) The outer end of the com nection 7 is screwed into a vaporizing-cham= ber 9, which contains a valve seat 10 and communicates with a cylinder 11 by way of a passage 12. Located Within the chamber 9 and mounted in the end of the connection 7 is an annular cup 13, communicating with the passage in the coupling 7 by means of a weir 14. A valve 15 fits the seat 10 and has a stem 16, which is slidingly mounted in the chamber 9 and passes through the central aper= ture in the annular cup 13. Mounted on the stem 16 is a vaporizer 17, which comprises an annular member 17 having a downward1yextending serrated rim 18,1ocated to fit within the cup 13 when the valve 15 is seated. The valve 15 is normally held seated by a coiled spring 19, surrounding the outer end of the stem 16 and bearing on the casing of the chamber 9 at one end and on a nut 20 at the other. Air-passages 21 pierce the chamber 9 and permit air to flow in and mix with the gasolene.

In operation the gasolene flows through the pipe 4 into the chamber 1 until it reaches the mouth of the overflow-pipe 5. The valve 2 is open when the engine is running, and the gasolene then flows from the chamber 1 through the connection 7 and into the cup 13. Each time the valve 15 is unseated the vaporizer 17 is raised out of the liquid gasolene in the cup 13. A thin film of the liquid adheres to the rim 18, which is immediately vaporized by the inrushing air through the passages 21.

I do not wish to be limited as to details of construction, as these may be modified in many particulars without departing from the spirit of my invention.

engine and having air and gasolene connections, of a gasolene-cup mounted in said chamber, a valve bearing a vaporizer located to normally dip into said cup and to be lifted out of said cup when said valve is unseated, substantially as described.

2. In a carburetor, the combination witha chamber constructed to be connected to an engine and having air and gasolene connections, an annular cup located in said chamber, a valve bearing a vaporizer dipping into said cup when said valve is seated and being withdrawn therefrom when said valve is unseated, substantially as described.

3. In a carbureter, a vaporizer comprising an annular member mounted on a valve-stem and bearing a serrated rim thereon, substantially as described.

4. In a earbureter, a cup, and a vaporizer bearing a serrated rim constructed to fit into said cup, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- TILLIE MULLER, BLANCHE JENKINS. 

